Another obstacle is that cheap SDR receivers like SDRPlay lack bandpass
filtering.
Barry N1EU
On Sun, Jan 29, 2017 at 10:14 PM, Carl Moreschi <n4py3@earthlink.net> wrote:
> I thought the QST article for panadapters was very poor. It recommended
> using the IF to feed the panadapter. This is an archaic method. Today
> with the SDR receivers available such as SDRplay, much better results can
> be obtained without the need for an IF tap. These new SDR receivers (such
> as SDRplay) can receive over a wide frequency range typically from 50 khz
> to well over 30 mhz.
>
> Because of this, the most modern hookups now just involve connecting the
> SDR receiver to the same antenna as the main radio and running them in
> parallel with the main radio. This gives a much wider and more versatile
> panadapter than being stuck with the radios IF.
>
> The only obstacle to this is a good way to share antennas without transmit
> power from the main radio destroying the SDR receiver. Some main radios
> offer a receive out and receive in loop so with those radios it is a simple
> setup.
>
> For radios that don't have a good way to share antennas, several companies
> offer solutions. For example, one such solution is the DXE-RTR-1A from DX
> Engineering.
>
> Carl Moreschi N4PY
> 58 Hogwood Rd
> Louisburg, NC 27549
> www.n4py.com
>
>
> On 1/29/2017 9:57 PM, km2km@twc.com wrote:
>
>> After reading the Panadaptor article in the FEB 2017 QST I'd like to try
>> that with my Delta II
>>
>> Has anyone done this? Where is the tap for the IF?
>>
>> Suggestions?
>>
>> 73
>> Kris KM2KM
>> MERSCHROD
>> 123 Warren Road
>> Ithaca, NY 14850
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